On 03/06/2015 01:51, Steve Rutherford wrote: > First patch in a series which enables the relocation of the > PIC/IOAPIC to userspace. > > Adds capability KVM_CAP_SPLIT_IRQCHIP; > > KVM_CAP_SPLIT_IRQCHIP enables the construction of LAPICs without the > rest of the irqchip.
The documentation is not updated. Changing other arches is definitely a no-no, unfortunately. But there are so many s/irqchip_in_kernel/lapic_in_kernel/ changes here, that I wonder if you should just keep irqchip_in_kernel true in the "split irqchip" case. You are already testing irqchip_split in a few cases, and you can add ioapic_in_kernel whenever you need to test "lapic_in_kernel && !irqchip_split" at the same time. Paolo > Compile tested for x86. > > Signed-off-by: Steve Rutherford <[email protected]> > Suggested-by: Andrew Honig <[email protected]> > --- > Documentation/virtual/kvm/api.txt | 15 ++++++++++++ > arch/powerpc/kvm/irq.h | 5 ++++ > arch/s390/kvm/irq.h | 4 ++++ > arch/x86/include/asm/kvm_host.h | 2 ++ > arch/x86/kvm/assigned-dev.c | 4 ++-- > arch/x86/kvm/irq.c | 6 ++--- > arch/x86/kvm/irq.h | 11 +++++++++ > arch/x86/kvm/irq_comm.c | 7 ++++++ > arch/x86/kvm/lapic.c | 13 +++++++---- > arch/x86/kvm/mmu.c | 2 +- > arch/x86/kvm/svm.c | 4 ++-- > arch/x86/kvm/vmx.c | 12 +++++----- > arch/x86/kvm/x86.c | 49 > +++++++++++++++++++++++++++------------ > include/kvm/arm_vgic.h | 1 + > include/linux/kvm_host.h | 1 + > include/uapi/linux/kvm.h | 1 + > virt/kvm/irqchip.c | 2 +- > 17 files changed, 104 insertions(+), 35 deletions(-) > > diff --git a/Documentation/virtual/kvm/api.txt > b/Documentation/virtual/kvm/api.txt > index 6955444..9a43d42 100644 > --- a/Documentation/virtual/kvm/api.txt > +++ b/Documentation/virtual/kvm/api.txt > @@ -2979,6 +2979,7 @@ len must be a multiple of sizeof(struct kvm_s390_irq). > It must be > 0 > and it must not exceed (max_vcpus + 32) * sizeof(struct kvm_s390_irq), > which is the maximum number of possibly pending cpu-local interrupts. > > + > 5. The kvm_run structure > ------------------------ > > @@ -3575,6 +3576,20 @@ struct { > > KVM handlers should exit to userspace with rc = -EREMOTE. > > +7.5 KVM_SPLIT_IRQCHIP > + > +Capability: KVM_CAP_SPLIT_IRQCHIP > +Architectures: x86 > +Type: VM ioctl > +Parameters: None > +Returns: 0 on success, -1 on error > + > +Create a local apic for each processor in the kernel. This differs from > +KVM_CREATE_IRQCHIP in that it only creates the local apic; it creates neither > +the ioapic nor the pic in the kernel. Also, enables in kernel routing of > +interrupt requests. Fails if VCPU has already been created, or if the > irqchip is > +already in the kernel. > + > > 8. Other capabilities. > ---------------------- > diff --git a/arch/powerpc/kvm/irq.h b/arch/powerpc/kvm/irq.h > index 5a9a10b..5e6fa06 100644 > --- a/arch/powerpc/kvm/irq.h > +++ b/arch/powerpc/kvm/irq.h > @@ -17,4 +17,9 @@ static inline int irqchip_in_kernel(struct kvm *kvm) > return ret; > } > > +static inline int lapic_in_kernel(struct kvm *kvm) > +{ > + return irqchip_in_kernel(kvm); > +} > + > #endif > diff --git a/arch/s390/kvm/irq.h b/arch/s390/kvm/irq.h > index d98e415..db876c3 100644 > --- a/arch/s390/kvm/irq.h > +++ b/arch/s390/kvm/irq.h > @@ -19,4 +19,8 @@ static inline int irqchip_in_kernel(struct kvm *kvm) > return 1; > } > > +static inline int lapic_in_kernel(struct kvm *kvm) > +{ > + return irqchip_in_kernel(kvm); > +} > #endif > diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h > index 7276107..af3225a 100644 > --- a/arch/x86/include/asm/kvm_host.h > +++ b/arch/x86/include/asm/kvm_host.h > @@ -639,6 +639,8 @@ struct kvm_arch { > bool boot_vcpu_runs_old_kvmclock; > > u64 disabled_quirks; > + > + bool irqchip_split; > }; > > struct kvm_vm_stat { > diff --git a/arch/x86/kvm/assigned-dev.c b/arch/x86/kvm/assigned-dev.c > index d090ecf..1237e92 100644 > --- a/arch/x86/kvm/assigned-dev.c > +++ b/arch/x86/kvm/assigned-dev.c > @@ -291,7 +291,7 @@ static int kvm_deassign_irq(struct kvm *kvm, > { > unsigned long guest_irq_type, host_irq_type; > > - if (!irqchip_in_kernel(kvm)) > + if (!lapic_in_kernel(kvm)) > return -EINVAL; > /* no irq assignment to deassign */ > if (!assigned_dev->irq_requested_type) > @@ -568,7 +568,7 @@ static int kvm_vm_ioctl_assign_irq(struct kvm *kvm, > struct kvm_assigned_dev_kernel *match; > unsigned long host_irq_type, guest_irq_type; > > - if (!irqchip_in_kernel(kvm)) > + if (!lapic_in_kernel(kvm)) > return r; > > mutex_lock(&kvm->lock); > diff --git a/arch/x86/kvm/irq.c b/arch/x86/kvm/irq.c > index a1ec6a50..706e47a 100644 > --- a/arch/x86/kvm/irq.c > +++ b/arch/x86/kvm/irq.c > @@ -57,7 +57,7 @@ static int kvm_cpu_has_extint(struct kvm_vcpu *v) > */ > int kvm_cpu_has_injectable_intr(struct kvm_vcpu *v) > { > - if (!irqchip_in_kernel(v->kvm)) > + if (!lapic_in_kernel(v->kvm)) > return v->arch.interrupt.pending; > > if (kvm_cpu_has_extint(v)) > @@ -75,7 +75,7 @@ int kvm_cpu_has_injectable_intr(struct kvm_vcpu *v) > */ > int kvm_cpu_has_interrupt(struct kvm_vcpu *v) > { > - if (!irqchip_in_kernel(v->kvm)) > + if (!lapic_in_kernel(v->kvm)) > return v->arch.interrupt.pending; > > if (kvm_cpu_has_extint(v)) > @@ -103,7 +103,7 @@ int kvm_cpu_get_interrupt(struct kvm_vcpu *v) > { > int vector; > > - if (!irqchip_in_kernel(v->kvm)) > + if (!lapic_in_kernel(v->kvm)) > return v->arch.interrupt.nr; > > vector = kvm_cpu_get_extint(v); > diff --git a/arch/x86/kvm/irq.h b/arch/x86/kvm/irq.h > index ad68c73..e46abf3 100644 > --- a/arch/x86/kvm/irq.h > +++ b/arch/x86/kvm/irq.h > @@ -92,6 +92,17 @@ static inline int irqchip_in_kernel(struct kvm *kvm) > return ret; > } > > +static inline int irqchip_split(struct kvm *kvm) > +{ > + return kvm->arch.irqchip_split; > +} > + > +static inline int lapic_in_kernel(struct kvm *kvm) > +{ > + return irqchip_split(kvm) || irqchip_in_kernel(kvm); > +} > + > + > void kvm_pic_reset(struct kvm_kpic_state *s); > > void kvm_inject_pending_timer_irqs(struct kvm_vcpu *vcpu); > diff --git a/arch/x86/kvm/irq_comm.c b/arch/x86/kvm/irq_comm.c > index 9efff9e..f43c59a 100644 > --- a/arch/x86/kvm/irq_comm.c > +++ b/arch/x86/kvm/irq_comm.c > @@ -328,3 +328,10 @@ int kvm_setup_default_irq_routing(struct kvm *kvm) > return kvm_set_irq_routing(kvm, default_routing, > ARRAY_SIZE(default_routing), 0); > } > + > +static const struct kvm_irq_routing_entry empty_routing[] = {}; > + > +int kvm_setup_empty_irq_routing(struct kvm *kvm) > +{ > + return kvm_set_irq_routing(kvm, empty_routing, 0, 0); > +} > diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c > index c789e00..92f4c98 100644 > --- a/arch/x86/kvm/lapic.c > +++ b/arch/x86/kvm/lapic.c > @@ -209,7 +209,8 @@ out: > if (old) > kfree_rcu(old, rcu); > > - kvm_vcpu_request_scan_ioapic(kvm); > + if (!irqchip_split(kvm)) > + kvm_vcpu_request_scan_ioapic(kvm); > } > > static inline void apic_set_spiv(struct kvm_lapic *apic, u32 val) > @@ -1827,7 +1828,8 @@ void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu, > kvm_x86_ops->hwapic_isr_update(vcpu->kvm, > apic_find_highest_isr(apic)); > kvm_make_request(KVM_REQ_EVENT, vcpu); > - kvm_rtc_eoi_tracking_restore_one(vcpu); > + if (!irqchip_split(vcpu->kvm)) > + kvm_rtc_eoi_tracking_restore_one(vcpu); > } > > void __kvm_migrate_apic_timer(struct kvm_vcpu *vcpu) > @@ -1910,7 +1912,8 @@ static void apic_sync_pv_eoi_to_guest(struct kvm_vcpu > *vcpu, > /* Cache not set: could be safe but we don't bother. */ > apic->highest_isr_cache == -1 || > /* Need EOI to update ioapic. */ > - kvm_ioapic_handles_vector(vcpu->kvm, apic->highest_isr_cache)) { > + kvm_ioapic_handles_vector(vcpu->kvm, apic->highest_isr_cache) || > + irqchip_split(vcpu->kvm)) { > /* > * PV EOI was disabled by apic_sync_pv_eoi_from_guest > * so we need not do anything here. > @@ -1966,7 +1969,7 @@ int kvm_x2apic_msr_write(struct kvm_vcpu *vcpu, u32 > msr, u64 data) > struct kvm_lapic *apic = vcpu->arch.apic; > u32 reg = (msr - APIC_BASE_MSR) << 4; > > - if (!irqchip_in_kernel(vcpu->kvm) || !apic_x2apic_mode(apic)) > + if (!lapic_in_kernel(vcpu->kvm) || !apic_x2apic_mode(apic)) > return 1; > > if (reg == APIC_ICR2) > @@ -1983,7 +1986,7 @@ int kvm_x2apic_msr_read(struct kvm_vcpu *vcpu, u32 msr, > u64 *data) > struct kvm_lapic *apic = vcpu->arch.apic; > u32 reg = (msr - APIC_BASE_MSR) << 4, low, high = 0; > > - if (!irqchip_in_kernel(vcpu->kvm) || !apic_x2apic_mode(apic)) > + if (!lapic_in_kernel(vcpu->kvm) || !apic_x2apic_mode(apic)) > return 1; > > if (reg == APIC_DFR || reg == APIC_ICR2) { > diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c > index a65ce12..1513d14 100644 > --- a/arch/x86/kvm/mmu.c > +++ b/arch/x86/kvm/mmu.c > @@ -3507,7 +3507,7 @@ static int kvm_arch_setup_async_pf(struct kvm_vcpu > *vcpu, gva_t gva, gfn_t gfn) > > static bool can_do_async_pf(struct kvm_vcpu *vcpu) > { > - if (unlikely(!irqchip_in_kernel(vcpu->kvm) || > + if (unlikely(!lapic_in_kernel(vcpu->kvm) || > kvm_event_needs_reinjection(vcpu))) > return false; > > diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c > index b9f9e10..59166de 100644 > --- a/arch/x86/kvm/svm.c > +++ b/arch/x86/kvm/svm.c > @@ -3054,7 +3054,7 @@ static int cr8_write_interception(struct vcpu_svm *svm) > u8 cr8_prev = kvm_get_cr8(&svm->vcpu); > /* instruction emulation calls kvm_set_cr8() */ > r = cr_interception(svm); > - if (irqchip_in_kernel(svm->vcpu.kvm)) > + if (lapic_in_kernel(svm->vcpu.kvm)) > return r; > if (cr8_prev <= kvm_get_cr8(&svm->vcpu)) > return r; > @@ -3295,7 +3295,7 @@ static int interrupt_window_interception(struct > vcpu_svm *svm) > * If the user space waits to inject interrupts, exit as soon as > * possible > */ > - if (!irqchip_in_kernel(svm->vcpu.kvm) && > + if (!lapic_in_kernel(svm->vcpu.kvm) && > kvm_run->request_interrupt_window && > !kvm_cpu_has_interrupt(&svm->vcpu)) { > kvm_run->exit_reason = KVM_EXIT_IRQ_WINDOW_OPEN; > diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c > index 9cf5030..3b58788 100644 > --- a/arch/x86/kvm/vmx.c > +++ b/arch/x86/kvm/vmx.c > @@ -948,7 +948,7 @@ static inline bool cpu_has_vmx_tpr_shadow(void) > > static inline bool vm_need_tpr_shadow(struct kvm *kvm) > { > - return (cpu_has_vmx_tpr_shadow()) && (irqchip_in_kernel(kvm)); > + return (cpu_has_vmx_tpr_shadow()) && lapic_in_kernel(kvm); > } > > static inline bool cpu_has_secondary_exec_ctrls(void) > @@ -1064,7 +1064,7 @@ static inline bool cpu_has_vmx_ple(void) > > static inline bool vm_need_virtualize_apic_accesses(struct kvm *kvm) > { > - return flexpriority_enabled && irqchip_in_kernel(kvm); > + return flexpriority_enabled && lapic_in_kernel(kvm); > } > > static inline bool cpu_has_vmx_vpid(void) > @@ -4341,7 +4341,7 @@ static void vmx_disable_intercept_msr_write_x2apic(u32 > msr) > > static int vmx_vm_has_apicv(struct kvm *kvm) > { > - return enable_apicv && irqchip_in_kernel(kvm); > + return enable_apicv && lapic_in_kernel(kvm); > } > > static int vmx_complete_nested_posted_interrupt(struct kvm_vcpu *vcpu) > @@ -5317,7 +5317,7 @@ static int handle_cr(struct kvm_vcpu *vcpu) > u8 cr8 = (u8)val; > err = kvm_set_cr8(vcpu, cr8); > kvm_complete_insn_gp(vcpu, err); > - if (irqchip_in_kernel(vcpu->kvm)) > + if (lapic_in_kernel(vcpu->kvm)) > return 1; > if (cr8_prev <= cr8) > return 1; > @@ -5534,7 +5534,7 @@ static int handle_interrupt_window(struct kvm_vcpu > *vcpu) > * If the user space waits to inject interrupts, exit as soon as > * possible > */ > - if (!irqchip_in_kernel(vcpu->kvm) && > + if (!lapic_in_kernel(vcpu->kvm) && > vcpu->run->request_interrupt_window && > !kvm_cpu_has_interrupt(vcpu)) { > vcpu->run->exit_reason = KVM_EXIT_IRQ_WINDOW_OPEN; > @@ -9419,7 +9419,7 @@ static void prepare_vmcs02(struct kvm_vcpu *vcpu, > struct vmcs12 *vmcs12) > /* vmcs12's VM_ENTRY_LOAD_IA32_EFER and VM_ENTRY_IA32E_MODE are > * emulated by vmx_set_efer(), below. > */ > - vm_entry_controls_init(vmx, > + vm_entry_controls_init(vmx, > (vmcs12->vm_entry_controls & ~VM_ENTRY_LOAD_IA32_EFER & > ~VM_ENTRY_IA32E_MODE) | > (vmcs_config.vmentry_ctrl & ~VM_ENTRY_IA32E_MODE)); > diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c > index 79dde16..19c8980 100644 > --- a/arch/x86/kvm/x86.c > +++ b/arch/x86/kvm/x86.c > @@ -784,7 +784,7 @@ int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8) > { > if (cr8 & CR8_RESERVED_BITS) > return 1; > - if (irqchip_in_kernel(vcpu->kvm)) > + if (lapic_in_kernel(vcpu->kvm)) > kvm_lapic_set_tpr(vcpu, cr8); > else > vcpu->arch.cr8 = cr8; > @@ -794,7 +794,7 @@ EXPORT_SYMBOL_GPL(kvm_set_cr8); > > unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu) > { > - if (irqchip_in_kernel(vcpu->kvm)) > + if (lapic_in_kernel(vcpu->kvm)) > return kvm_lapic_get_cr8(vcpu); > else > return vcpu->arch.cr8; > @@ -2866,6 +2866,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long > ext) > case KVM_CAP_TSC_DEADLINE_TIMER: > case KVM_CAP_ENABLE_CAP_VM: > case KVM_CAP_DISABLE_QUIRKS: > + case KVM_CAP_SPLIT_IRQCHIP: > #ifdef CONFIG_KVM_DEVICE_ASSIGNMENT > case KVM_CAP_ASSIGN_DEV_IRQ: > case KVM_CAP_PCI_2_3: > @@ -3068,7 +3069,7 @@ static int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu > *vcpu, > { > if (irq->irq >= KVM_NR_INTERRUPTS) > return -EINVAL; > - if (irqchip_in_kernel(vcpu->kvm)) > + if (lapic_in_kernel(vcpu->kvm)) > return -ENXIO; > > kvm_queue_interrupt(vcpu, irq->irq, false); > @@ -3546,7 +3547,7 @@ long kvm_arch_vcpu_ioctl(struct file *filp, > struct kvm_vapic_addr va; > > r = -EINVAL; > - if (!irqchip_in_kernel(vcpu->kvm)) > + if (!lapic_in_kernel(vcpu->kvm)) > goto out; > r = -EFAULT; > if (copy_from_user(&va, argp, sizeof va)) > @@ -3904,7 +3905,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct > kvm_dirty_log *log) > int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event, > bool line_status) > { > - if (!irqchip_in_kernel(kvm)) > + if (!lapic_in_kernel(kvm)) > return -ENXIO; > > irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID, > @@ -3926,6 +3927,23 @@ static int kvm_vm_ioctl_enable_cap(struct kvm *kvm, > kvm->arch.disabled_quirks = cap->args[0]; > r = 0; > break; > + case KVM_CAP_SPLIT_IRQCHIP: { > + mutex_lock(&kvm->lock); > + r = -EEXIST; > + if (lapic_in_kernel(kvm)) > + goto split_irqchip_unlock; > + r = -EINVAL; > + if (atomic_read(&kvm->online_vcpus)) > + goto split_irqchip_unlock; > + r = kvm_setup_empty_irq_routing(kvm); > + if (r) > + goto split_irqchip_unlock; > + kvm->arch.irqchip_split = true; > + r = 0; > +split_irqchip_unlock: > + mutex_unlock(&kvm->lock); > + break; > + } > default: > r = -EINVAL; > break; > @@ -4194,6 +4212,7 @@ long kvm_arch_vm_ioctl(struct file *filp, > r = kvm_vm_ioctl_enable_cap(kvm, &cap); > break; > } > + > default: > r = kvm_vm_ioctl_assigned_device(kvm, ioctl, arg); > } > @@ -5959,7 +5978,7 @@ void kvm_arch_exit(void) > int kvm_vcpu_halt(struct kvm_vcpu *vcpu) > { > ++vcpu->stat.halt_exits; > - if (irqchip_in_kernel(vcpu->kvm)) { > + if (lapic_in_kernel(vcpu->kvm)) { > vcpu->arch.mp_state = KVM_MP_STATE_HALTED; > return 1; > } else { > @@ -6126,7 +6145,7 @@ static int emulator_fix_hypercall(struct > x86_emulate_ctxt *ctxt) > */ > static int dm_request_for_irq_injection(struct kvm_vcpu *vcpu) > { > - return (!irqchip_in_kernel(vcpu->kvm) && !kvm_cpu_has_interrupt(vcpu) && > + return (!lapic_in_kernel(vcpu->kvm) && !kvm_cpu_has_interrupt(vcpu) && > vcpu->run->request_interrupt_window && > kvm_arch_interrupt_allowed(vcpu)); > } > @@ -6138,7 +6157,7 @@ static void post_kvm_run_save(struct kvm_vcpu *vcpu) > kvm_run->if_flag = (kvm_get_rflags(vcpu) & X86_EFLAGS_IF) != 0; > kvm_run->cr8 = kvm_get_cr8(vcpu); > kvm_run->apic_base = kvm_get_apic_base(vcpu); > - if (irqchip_in_kernel(vcpu->kvm)) > + if (lapic_in_kernel(vcpu->kvm)) > kvm_run->ready_for_interrupt_injection = 1; > else > kvm_run->ready_for_interrupt_injection = > @@ -6285,7 +6304,7 @@ void kvm_vcpu_reload_apic_access_page(struct kvm_vcpu > *vcpu) > { > struct page *page = NULL; > > - if (!irqchip_in_kernel(vcpu->kvm)) > + if (!lapic_in_kernel(vcpu->kvm)) > return; > > if (!kvm_x86_ops->set_apic_access_page_addr) > @@ -6323,7 +6342,7 @@ void kvm_arch_mmu_notifier_invalidate_page(struct kvm > *kvm, > static int vcpu_enter_guest(struct kvm_vcpu *vcpu) > { > int r; > - bool req_int_win = !irqchip_in_kernel(vcpu->kvm) && > + bool req_int_win = !lapic_in_kernel(vcpu->kvm) && > vcpu->run->request_interrupt_window; > bool req_immediate_exit = false; > > @@ -6712,7 +6731,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, > struct kvm_run *kvm_run) > } > > /* re-sync apic's tpr */ > - if (!irqchip_in_kernel(vcpu->kvm)) { > + if (!lapic_in_kernel(vcpu->kvm)) { > if (kvm_set_cr8(vcpu, kvm_run->cr8) != 0) { > r = -EINVAL; > goto out; > @@ -7421,7 +7440,7 @@ void kvm_arch_check_processor_compat(void *rtn) > > bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) > { > - return irqchip_in_kernel(vcpu->kvm) == (vcpu->arch.apic != NULL); > + return lapic_in_kernel(vcpu->kvm) == (vcpu->arch.apic != NULL); > } > > struct static_key kvm_no_apic_vcpu __read_mostly; > @@ -7437,7 +7456,7 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) > > vcpu->arch.pv.pv_unhalted = false; > vcpu->arch.emulate_ctxt.ops = &emulate_ops; > - if (!irqchip_in_kernel(kvm) || kvm_vcpu_is_reset_bsp(vcpu)) > + if (!lapic_in_kernel(kvm) || kvm_vcpu_is_reset_bsp(vcpu)) > vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE; > else > vcpu->arch.mp_state = KVM_MP_STATE_UNINITIALIZED; > @@ -7455,7 +7474,7 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) > if (r < 0) > goto fail_free_pio_data; > > - if (irqchip_in_kernel(kvm)) { > + if (lapic_in_kernel(kvm)) { > r = kvm_create_lapic(vcpu); > if (r < 0) > goto fail_mmu_destroy; > @@ -7518,7 +7537,7 @@ void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) > kvm_mmu_destroy(vcpu); > srcu_read_unlock(&vcpu->kvm->srcu, idx); > free_page((unsigned long)vcpu->arch.pio_data); > - if (!irqchip_in_kernel(vcpu->kvm)) > + if (!lapic_in_kernel(vcpu->kvm)) > static_key_slow_dec(&kvm_no_apic_vcpu); > } > > diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h > index 133ea00..ffe1f4e 100644 > --- a/include/kvm/arm_vgic.h > +++ b/include/kvm/arm_vgic.h > @@ -329,6 +329,7 @@ int kvm_vgic_vcpu_pending_irq(struct kvm_vcpu *vcpu); > int kvm_vgic_vcpu_active_irq(struct kvm_vcpu *vcpu); > > #define irqchip_in_kernel(k) (!!((k)->arch.vgic.in_kernel)) > +#define lapic_in_kernel(k) (irqchip_in_kernel(k)) > #define vgic_initialized(k) (!!((k)->arch.vgic.nr_cpus)) > #define vgic_ready(k) ((k)->arch.vgic.ready) > > diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h > index a8bcbc9..7e2b41a 100644 > --- a/include/linux/kvm_host.h > +++ b/include/linux/kvm_host.h > @@ -935,6 +935,7 @@ static inline int mmu_notifier_retry(struct kvm *kvm, > unsigned long mmu_seq) > #endif > > int kvm_setup_default_irq_routing(struct kvm *kvm); > +int kvm_setup_empty_irq_routing(struct kvm *kvm); > int kvm_set_irq_routing(struct kvm *kvm, > const struct kvm_irq_routing_entry *entries, > unsigned nr, > diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h > index 75bd9f7..1e6f6c3 100644 > --- a/include/uapi/linux/kvm.h > +++ b/include/uapi/linux/kvm.h > @@ -815,6 +815,7 @@ struct kvm_ppc_smmu_info { > #define KVM_CAP_S390_IRQ_STATE 114 > #define KVM_CAP_PPC_HWRNG 115 > #define KVM_CAP_DISABLE_QUIRKS 116 > +#define KVM_CAP_SPLIT_IRQCHIP 117 > > #ifdef KVM_CAP_IRQ_ROUTING > > diff --git a/virt/kvm/irqchip.c b/virt/kvm/irqchip.c > index 1d56a90..8aaceed 100644 > --- a/virt/kvm/irqchip.c > +++ b/virt/kvm/irqchip.c > @@ -73,7 +73,7 @@ int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi > *msi) > { > struct kvm_kernel_irq_routing_entry route; > > - if (!irqchip_in_kernel(kvm) || msi->flags != 0) > + if (!lapic_in_kernel(kvm) || msi->flags != 0) > return -EINVAL; > > route.msi.address_lo = msi->address_lo; > -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
